does any know what spark plugs i am supposed to run in my 1996 formula 111 600?
the manual says br9es but the NGK website says br10es....

thanks in advance

Follow the Manual

alrite thanks....
i just thought it might be kind of like the 98-99 zr500's where people had to run the br10eya instead of br9eya

nice sled! Iv'e got an f3, I run br9ev's and they last longer-more power when rich.

Run the new BR9ECS. They will help prevent the ignition issues those sleds have.

thanks for all the input guys

it is actually a friends sled who just bought it last year...he wasnt sure to buy for new plugs...i cant remember what plugs he said were in it when he bought it

try br9eya great plugs arctic cat exclusive but check first because they are same heatrange but the y means a v cut in the electrode to help in fouling situations

The manual had a page update with it back in 96 and one of the changes was the plugs, The update indicated you should use BR10ES plugs.

The BR10's are a colder plug than the BR9's and the 9's are colder than the BR8's